Import library from maven repos via gradle

build.gradle

buildscript {
    def projectRepositories = {
        mavenCentral()
        maven { url 'http://repo1.maven.org/maven2' }
        maven {
            url new File(System.properties['user.home'], '.m2/repository').toURI().toURL()
        }
    }
    allprojects {
        repositories projectRepositories
    }
    repositories projectRepositories
    dependencies {
        classpath 'com.android.tools.build:gradle:0.4'
        classpath "com.squareup:otto:1.3.3"
        classpath "com.squareup.retrofit:retrofit:1.0.1"
        classpath "commons-io:commons-io:2.4"
    }
}
apply plugin: 'android'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
    compile group: "com.squareup", name: "otto", version: "1.3.3"
    compile group: "com.squareup.retrofit", name: "retrofit", version: "1.0.1"
    compile group: "commons-io", name: "commons-io", version: "2.4"
}

android {

    compileSdkVersion 17
    buildToolsVersion "17.0.0"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 16
    }
    buildTypes {
        debug {
            packageNameSuffix ".debug"
            versionNameSuffix "-debug"
        }
    }

}